This Mormon Message gives us two great questions to guide our use of technology. (I'm paraphrasing Elder Bednar):
1) Does your technology use invite or push away the Spirit?
2) Does the time you spend on technology improve or get in the way of living, loving, and serving?
Here is a great Mormon Message that sums it up.
Below is Elder Bednar's full CES Fireside. You can read it here.