sent about 10 bids in about 20 mins.

Even bots won't send that far... (Bots can send faster but they won't do it because it's a very suspicious move.) I think sending 5 bids in an hour is overdoing it.

But that's just my opinion maybe because I don't like posting many posts a day and I consider it spamming depending on quality.

My point is, 10 bids in 20 minutes would seem a bot work to anyone who checks the wallet without checking the posts that were voted.