Andy_Langton - 1:46 am on Feb 25, 2013 (gmt 0)
Iframes are a slightly sticky subject. One the one hand, your use is perfectly legitimate. On the other, it's quite natural for search engines to be a little suspicious of iframes, since they can easily be used to hide content - indeed, hackers frequently use them for "injecting" content into a page that browsers will follow. You would naturally want to avoid such perceptions, even if the risks are relatively small.