Online petition platforms collect the details you submit to process a signature, deliver it to a campaign target and operate their services. What they ask for, who can see each field and how they use it varies by platform and petition. Before signing, check the requested fields, the visibility setting beside the sign button and the platform’s privacy policy—especially before sharing an address, phone number or sensitive comment.
What information can a petition platform collect?
A signature form may ask for more than a name and email address. Depending on the service and campaign, it can request a location, postal code, street address, phone number, comment or message to a decision-maker. Submitting a form can also generate technical data such as an IP address, cookies and browsing or engagement activity.
Required fields and optional ones are not the same. A platform may need location to validate a signature or show geographic support, while a comment may be optional. Read the form before submitting, and do not assume every campaign on the same service requests identical information.
What the major platforms say they collect and do
The following examples summarize official policy and help material for three services; they are not a ranking or a guarantee about every petition. Regional notices and campaign requirements may differ.
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| Platform | Information described | Uses and sharing described | Controls and caveats |
|---|---|---|---|
| Change.org | Account name, email and password; signing location and comments; broader personal-data categories and inferred petition preferences. | Service operation and improvement. Change.org’s help material says petition starters can download signature lists containing a signer’s name, approximate location or postcode, country, signing date and comment, if provided. | Its help page permits pseudonyms and says signers can turn off display of their name or comment. Email preferences can be managed. The signing form and current policy govern the specific petition. |
| Avaaz | Name, email, postal code or country, language preference, IP address, comments or messages, petition history, survey responses, engagement information and technical or cookie data. | Campaign communications, audience grouping and targeting, analytics, and sending petition information to targets. Target disclosures can include name, city, country and comments; some constituency-related cases may include address details. | The policy describes managing information and preferences through a profile. Visibility and what is sent depend on the campaign. |
| Care2 / ThePetitionSite | Name and email, and often a street address for petition or public-comment signers. Care2 also describes account identifiers, IP addresses and optional demographic information. | Name, city, state or country, and comments may be publicly displayed or sent in compilations to targets or the press. A street address is not publicly displayed but may be transmitted to public officials or other targets. | The policy describes an anonymity request and withholding street addresses from public display. Check regional notices and the specific form. |
Who can see a petition signature?
There can be several separate audiences: the platform, the petition starter, the campaign’s target and visitors to the public petition page. A field that is hidden from public display may still be included in a signature record sent privately to a decision-maker, or be available to the campaign organizer.
Change.org’s help material describes signature-list downloads for petition starters. Avaaz describes sending petition information to targets, with the disclosed fields depending on the campaign. Care2 says some information may be public or included in compilations for targets or press, while street addresses are withheld from public display but may be transmitted to targets. These examples are not interchangeable rules: inspect the visibility notice and policy for the service you are using.
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How platforms use information after you sign
Using a signature to operate a petition or deliver a message is only one stated purpose. Platform policies also describe communications, recommendations or audience targeting, analytics, security and service improvement. The details vary by service:
- Change.org: its policy covers service operation and improvement; its help material explains what information can appear in a list downloaded by petition starters.
- Avaaz: its policy describes campaign communications, audience grouping and targeting, analytics, and sharing petition information with targets.
- Care2 / ThePetitionSite: its policy describes public display and compilations sent to targets or press, with street addresses withheld from public display.
Do not treat a platform’s stated practices as a universal description of all petition services. For questions about access, deletion or retention, consult the platform’s current policy and any privacy notice for your region.
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Can you sign a petition anonymously?
Some services describe controls that limit public display, but “anonymous” does not necessarily mean the platform collects no identifying information or that a campaign target receives none. Change.org says signers may use a pseudonym and choose not to display their name or comment. Care2 describes an anonymity option. Confirm the current setting on the signing page; controls and labels may vary by campaign or region.
How to check privacy before signing
- Review every form field. Separate required information from optional comments, messages or contact details. If a sensitive detail is optional, leave it out unless it is necessary for your purpose.
- Check the display setting beside the sign action. Look for whether your name or comment will appear publicly. Do not assume that hiding a field from the page also prevents private delivery to a target or access by the petition starter.
- Read the relevant platform policy and regional notice. Check what the platform says about campaign communications, sharing, data controls, deletion and retention. Policies can change, and rights or procedures may depend on your location.
- Use available privacy and notification controls. Where offered, choose a pseudonym or anonymity setting and review email preferences. These controls affect only what the service says they affect; they are not a substitute for checking what information is collected or delivered.
Change.org address requirements and other service differences
Change.org’s help page says a signer can provide a city or town and postcode instead of a full street address. Care2 says ThePetitionSite often requires a street address. These are platform-specific examples, not a general rule about petitions; check the exact campaign form before providing address details.
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