ATLANTA (Reuters) - A growing number of gay and bisexual men in the United States are engaging in risky sex with partners they meet on the Internet, raising fears that the AIDS virus could be poised for a major comeback in the group hardest hit by the epidemic. Online chatrooms and Web sites are replacing gay bathhouses and sex clubs as the most popular meeting point to arrange high-risk sex, according to two new studies presented on Tuesday at the 2003 National HIV (news - web sites) Prevention Conference. The findings come amid growing evidence of an apparent resurgence of...