The username that i think that are malicious (Spam) are:
1. gavinmqz: Even it is related to lamps, the site address is broken and may be a former advertisement site that removed from the internet, suspected email address, the username signature displaying it as a sales manager from a chinese lamps factory called Zhejiang Xinyuan Lighting Co. Ltd (I know this factory as several lamps that includes nightlights imported from it to Israel, and they are junks: My last fluorescent nightlights was from them and despite the 24/7 operation, the lamp killed itself after several weeks [The tube flickered wildly while the electrodes sputtered until the lamp went out]), in addition to several spamming marks on the username profile.
2. JLoes: Its site address leads to nothing but Google.
Admis, please take care about this and also search for usernames that have a fake email address and remove them also.

Thanks dor123.  I agree that these two could be potential spammers, and neither account had been used in over a year anyway.  I have removed them.