Well, if you can’t blow your own trumpet on your own website, where can you? Whilst it was published way back on January 7, one of our clients has kindly pointed out the following bragging rights which we thought we would share. Microsoft publishes various useful tricks and tips for Excel from time to time on its “Office Blogs” web site. Last year, SumProduct’s Liam Bastick was invited to write an article on summing data based on multiple criteria on multiple worksheets. The formula is pretty ugly, but it proved to be ranked the fourth favourite Excel blog of 2013: