The mistake I made in the past was not sharing the same tweets enough. Maybe a couple of tweets throughout the same day the item was posted and that's it. I thought anything more would be spammy. That was foolish.
I wasn't adding enough of my personality in my item tweets, just "NEW! Beaded Red Jade Earrings in the shop! http://blahblahblah" - that's kind of lame.
It is fun trying to come up with new wording to make my items more interesting. When I do, I got to make sure people actually see it. My tweet activity is maybe 50 views on average, which is not much.
Buffer is my new favorite tool for scheduling my Etsy/Storenvy shop item tweets. I can still do this on Hootsuite but I visually like how Buffer lays out up to 10 tweets (I always include an image), or you can "Upgrade To Awesome" - which I'm considering, and add up to 100 posts and tweets and add more accounts including Pinterest.
Etsy sellers (myself included) complained about the drop in shop views. Retagging items and rewording titles and description helped, but I really saw a jump when I began scheduling tweets on Buffer between midnight and 6:00 am as well as throughout the day. Comparing Etsy views from January through April 2014 to this year, my views have doubled!
Twitter is still my favorite Social Media platform and I'm seeing "buff.ly" referrals surpassing Pinterest as my top referrer for 2015. That's the other thing, "Twitter" does not show up in Etsy stats as a referrer. The links you share on Twitter show up as Direct Traffic so you don't know for sure if people are clicking those links. At least with Buffer, you get a better idea.
You can schedule your tweets manually or add them to a queue with designated times you set up so your updates go out around the same time.
Have I mentioned the Analytics feature? While I'm not as concerned about "Follower" numbers, I do like looking at performance statistics for different things. For someone who hates math, I have a thing for numbers!
The Analytics tab in Buffer shows the recent updates that went out and how much interaction it had. It gives you a better idea of what's working and what doesn't. IFTTT, Hootsuite, and now Buffer are all included in my toolbox of time-management greatness. What do you like to use?