This week, readers sent us comments on Canadian health care (again), Obama’s thoughts on a single-payer system and AARP’s support of a health care overhaul. In the FactCheck Mailbag we feature some of the e-mail we receive. Readers can send comments to editor@factcheck.org. Letters may be edited for length.

This week, readers sent us comments on Canadian Shona Holmes, employer health care and Nazi symbols. In the FactCheck Mailbag we feature some of the e-mail we receive. Readers can send comments to editor@factcheck.org. Letters may be edited for length.

This week, readers sent us comments on Facebook trolls, bias and the uninsured. In the FactCheck Mailbag we feature some of the e-mail we receive. Readers can send comments to editor@factcheck.org. Letters may be edited for length.

This week, readers sent us comments on social networking, health care and birth-certificate doubters. In the FactCheck Mailbag we feature some of the e-mail we receive. Readers can send comments to editor@factcheck.org. Letters may be edited for length.

This week, readers sent us comments on our Web site redesign, health care and bogus e-mail rumors. In the FactCheck Mailbag we feature some of the e-mail we receive. Readers can send comments to editor@factcheck.org. Letters may be edited for length.

This week, readers sent us comments on our recent Ask FactCheck about the U.K.’s and Canada’s health care systems, along with requests to leave the comedy to Jon Stewart and to spend less time on chain e-mails, more on facts about daily news events.

This week, readers sent us kudos for what we do, questions about sorting out conflicting health care claims, complaints about our coverage of President Obama’s citizenship, and inquiries about political fundraising.