I've sent a few $ tips for exceptional help, but as it's sometimes several months between contacting various this app staff, I can't remember who I've tipped, how much, and how often. Please reply with the URL for the location on your site where I can go to see my "Tipping Activity" (if it exists). If your site doesn't currently have that facility, please consider it and if you add it, make it logical/visible, like under "Order History", and maybe change the name to "Order/Tip History". Another place to put a "TIP" link would be on the Message/Chat Profile located on the left side bar and add a link below the "# satisfied customers" verbiage that says "Tip History".
I think your "Answering Staff" would probably appreciate this subtle (near subliminal) encouragement to your subscriber/members to consider/think about tipping an expert when a job is well done. I personally would appreciate the landing page for the "Profile" hyperlink include by date individual tip $ amounts, as you do with "Order History", with a Sum Total at the bottom, and for the Overall
"Order/Tip History", the individual "Expert" Tip transactions of all Experts tipped, with a Sum total of all tipping to all staff.
Let me know if any of this facility is already extant on your site, and if not, is there any receptivity, preferably probability that the functionality will be added in the near future.