John, sounds like you have an infected computer (may be a "helper" app you have installed, perhaps unwittingly) that is monitoring pages and inserting the highlights.

On the theme of the thread: We go (not as performers) to a wonderful small Festival here in the UK (Moira Furnace). I noticed that a couple of years ago they had a longish session on one of the small stages where people could perform for consideration to be guests the next year. Couldn't make it, unfortunately, so don't know how it went, but it didn't happen last year so either they have enough people to consider, or it didn't work. Perhaps someone who was involved can tell us?