Why Mergers Fail

"Here are my top 10 most common, preventable merger failure modes. One is enough to spell doom, but the more the merrier the train wreck:

1. Flawed corporate strategy for either or both companies
2. One company sugarcoats the truth, the other buys a PowerPoint pitch
3. Sub-optimum integration strategy for the situation
4. Cultural misfit, loss of key employees after retention agreements are up
5. Acquiring company's management team inexperienced at M&A
6. Flawed assumptions in synergies calculation
7. Ineffective corporate governance, plain and simple
8. Two desperate companies merge to form one big desperate company
9. CEO of one or both companies sells board and shareholders a bill of goods
10. An impulse buy or panic sell gets shoved down the board's throat

"From a corporate governance standpoint, all significant mergers should be scrutinized by some really smart, experienced and disinterested (and therefore objective--this is key) people. Why boards don't do that as a matter of course I have no idea.

"The burden of proof for mergers to make sense should be as high as their risk, their failure rate and the pain they inevitably cost shareholders."

Read more in this Cnet.com Tech news blog post.