Thanks for this! – it’s pretty much along the lines of a suggestion I made (but did not follow through on) in this thread.
Also in that thread there is discussion about whether it is even worth flagging the spam accounts that come up in the “Probably Spam” filter, given that they are already hidden from everyone except curators. But I still find it satisfying to flag them anyway… 
Since some legitimate users include hyperlinks in their descriptions, my suggestion was to make the search capability a little more general on the Description field. For example, if one could generate a parameter &q="To learn more, go to website:" in the search URL, that would filter probably 99%+ of true positives, and virtually no false positives.