Getting Rid of In-text Ads (Read 37 times)

Annoying in-text ads started showing up this morning.  (Highlighted word in a post is a link to an ad, etc.)  A quick search here seemed to confirm that this isn't part of RA but is likely a malware issue.

I ran AVG and Malware Bytes and came up clean.

I tried a different browser and discovered that the ads appear in Firefox but not in IE.

Any suggestions on what I might try to get rid of them?

ETA:  Never mind, I figured it out.  Somehow a "discount price finder" add-on installed itself in Firefox.  I deleted it and it seems to have taken care of the problem.