1. I vaulted to the top of google hong kong results
2. Not in results in the Google US search
3. Did another smallish blog commenting run on Friday
4. Nowhere in sight this morning on SERPs for both Google Hong Kong and Google US
None of my other keyword SERPs for the same site have been affected (out of about 15).
Is this the dreaded sandbox? Should I just keep building links? Mind you this is for a domain that has been up for a year and a half and we have been steadily link building over this time. For this particular keyword, we weren't more aggressive than other keywords...
If anyone has been sandboxed before, what did you do? Was it only for one keyword? or your entire site?