The Street continues to jump on the Yahoo (YHOO) bandwagon as shares make new 52-week highs. A day after Goldman made Yahoo a Conviction Buy, Bernstein's Carlos Kirjner (seen yesterday upgrading Facebook) argues shares could pass $25 thanks to better ad monetization, mobile/social investments, and the appreciation of Asian assets. Nonetheless, he cautions it's "hard to see Yahoo! as a long-term winner." Google saw similar bandwagon-jumping take place prior to its Q3 miss. YHOO +0.6%.